System Set-Up
44
Air-to-Water Heat Pump
Emergency operation
• Definition of terms
-
Trouble :
a problem which can stop system operation, and can be resumed temporally under
limited operation without certificated professional's assist.
-
Error :
problem which can stop system operation, and can be resumed ONLY after certificated
professional's check.
-
Emergency mode :
temporary heating operation while system met trouble.
• Objective of introducing 'trouble'
- Not like airconditioning unit, Air-to-Water heat pump is generally operating in whole winter
season without any system stopping.
- If system found some problem, which is not critical to system operating for yielding heating
energy, the system can temporarily continue in emergency mode operation with end user's
decision.
• Classified trouble
- Trouble is classified two levels according to the seriousness of the problem : Minor Trouble and
Major trouble
-
Minor trouble :
Sensor trouble.
-
Major trouble :
Compressor cycle trouble.
-
Option trouble :
a problem is found for option operation such as water tank heating. In this
trouble, the troubled option is assumed as if it is not installed at the system.
• Emergency operation level
- When system met trouble, it stops operation and wait for user’s decision : Calling service
center or starting emergency operation.
- To start emergency operation, user simply push ON / OFF button once more.
- Two different levels are prepared for emergency operation : High temperature cycle and low
temperature cycle.
- In emergency operation mode, user can not adjust target temperature.
h
It can not be operated, if the electric heater accessory is not installed.
High temperature cycle OFF 50 °C 24 °C 70 °C
Low temperature cycle ON 30 °C 19 °C 50 °C
DIP
Switch (#4)
Target
Leaving Water
Temperature
Target
Room Air
Temperature
Target
Sanitary Water
Temperature
NOTICE